Door



M. GILMORE June K 16,- 14925.

Doon

Filed Doo, 31,4 192i;

2 Shelets-Sheet l Patented June 16, 1925.

UNITED STATES MI/LLARD GILMORE, or OAK rank, ILLINOIS,

DOOR.

Application led December 31,1921. Serial No. 526,106.

To aZle/mmc't may concern:

Be it known that I, MILLARD GILMoRE, a citizen of theUnited States,residing at Oak Park, in the county of Cook and State of Illinois, haveinventeda new and useful Improvement in Doors, of which the following isa specification.

This invention relates particularly to the construction of fire-doors;and the primary object is to provide a door of exceedingly staunchconstruction, of improvedv appearance, and capabley of beingmanufactured very economically.

The invention is illustrated, in its preferred embodiment, in theaccompanying drawings, in which- Fig. l represents a fragmentary view ofa building wall which is provided with a dooropening and which isequipped withl the improved door; Fig. 2, an enlarged broken horizontalsectional view taken as indicated at line 2 of Fig. l; Fig. 3, anenlarged broken vertical sectional viewtaken as indicated at line 3 ofFig. 1; Fig. 4, an eleva tional view of thek reverseoside of the doorshown in Fig. 1;.Fig. 5, an enlarged broken sectional view; and Fig. 6,a broken vertical sectonal view of the marginal binding member of thedoor showingthe construction 'of one of the corners. v l

In the construction illustrated, A represents a wall which is providedwith a door` opening A; and B, the improved door.

v In the illustration given, the wall sshown equipped above theydoor-opening with a track 1; and. the door is equipped with hangers 2provided with rollers 3 which engage said track. Also, the `wall isshown equipped with stops 4 for engaging the rear vertical edge of thedoor, and with a stop 5 for engaging the front vertical edge portion ofthe door, these stops being adapted to hold the door close to the wallwhen the door is in a closed position.

The door vB comprises vertical plates 6 which form one side of the,door; transverse or horizont-al plates 7 which form the other sideof thedoor; interposed asbestos sheets 8; and a marginal binding member 9which has inwardly extending flanges secured to said plates.

In the illustration given, the door is shown as having three of thevertical plates 6 .which arey united together by lines of rivets 6a.Also, in the illustration given, three of the cross-plates 7 areemployed, these crossplates being joined together by means of horizontalrows of rivets 7 "E All of the rivets perferably extend thru the door atthe junctions of the vertical and horizontal corrugations, so that theside walls of the door are thus riveted together thru the interveningasbestos 8.

Each of the vertical plates 6 is provided with outwardlyV struckvertical panels 6b which Aare oined together by relatively narrow,inwardly struck corrugations 6, which may betermed base-corrugations.Similarly, each of the cross-plates 7 is provided with outwardly struckhorizontal panels 7b which are connected by inwardly struck, relativelynarrow corrugations 7c.

' The marginal binding member 9 of the door is of the box form clearlyshown in Fig. 3. It preferably is made by bending a piece of sheet-metalinto hollow form of rectangular cross-section and extending the marginsof the sheet-metal inwardly from the hollow kbody of the marginalmember. The inturned flanges 9 of the marginal member 9 are connected byrivets l0 with the sheet-metal plates 6 and 7 and the interposedasbestos sheets 8. x

The box-form panel, by preference the marginal binding member 9, isprovided by first forming a tubular member of rectangular cross-section,but provided with the projecting flanges on one side, such member beingof great enough length to form the entire binding member of the door;then mitering the member at the proper points and bending it into theform of a rectangle conforming to the shape and size of the door. Thus,the marginal member is provided with the mitered edges 9b which may bejoined together in any suitable manner, as by welding. Vhere the ends ofthe marginal member come together, as illustrated in Fig. 6, anangle-form connecting member l1 is employed to connect the eX-tremities, the member 11 being secured to the hollow body by means ofscrew-bolts 11a. If desired, the connecting member ll and the bolts llamay be employed for strengthening each of the corners of the marginalmember, in lieu of the welding operation above referred to.

The construction described is exceedingly staunch and durable, iscapable of being manufactured more cheaply than the better types ofconstruction now in use, and provides large air spaces between theplates of the door. The improvedV door is. also one of Very greatlyimpro-ved appearance. Preferably, the flanges 921 of the marginal member9 are located closer the front surface 9c than they are to the rearsurface 9d of the marginal member; and the marginal member is projectedrearwardly beyond the panels of the cross-plates 7, as clearly appears'from Fig. 3. Thus, the marginal member is adapted to bearagainst thewall completely aroundl the door-opening when the door is in closedposition. At the same time, the raised panels of the vertical; plates 6,which are. at the front side. of'` the door, are preferablysubstantially fiush with. the front surfaces 9c oil the marginal member.The result is that the front surface oi the door presents an.exceedingly pleasing apf. It thel racticall continuous'. but with the)leasing P Y l .s

paneled eiiect already noted.

`As appears from. Fig. 2, the. Vmarginal member 9 is provided'at theVfront edge por,- tion of: the door with a perforation 'l2 whichisadapted to receive the hook 5* ot the stop or binding member 5.

The improved construction is comparat'iively cheap, exceedinglyY strongand. du rable, and presents a pleasing. al'ipearance which has hithertonot been obtainable in lire-doors.

The improved bindingr member employed onthe door may be formed: bysuitable rolh ing operations, 'followed by niitering and bending, as.vabove described. lin connection witl'r the` improved binding.y member,any suitable corrugated plates may be employed,

but it `is preferred to employ corrugated plates ot the form shown.lVhP/ l'ethe door is small, a singlenlverticall plate may suiiice. Wherethe door is o'llarger dimensions, any suitable number of: plates may beused.

'llhe foregoingdetailed description has been given for clearness ofunderstanding only, and no unnecessary limitations should be understoodtherefrombut the appended claims should b'e, construed as broadly aspermissible, in View of the prior art.

That I regard as new, and desire to secure by Letters Patent, is*

l. A door comprising corrugated plates extending cross-wise with respectto each other, and a,marginalbinding-member coinprising an integralhollow sheet-metal body of substantially rectangular cross-sectionwhich` is. flangeless at its outer sides and which. has projectingflanges at its inner periphery, saidl binding-member being mitered: and;bent to the iiorm ot the door and said flanges being interposed betweenand4 riveted to said plates.

2; A door comprising a; sheet-metal boxorm bind-ing' member of'integral. crosssection andl having its margins t afjordingk flangeswhich. extend inwardly from the in ner peripheral wallA of thebinding-member, corrugated plates which extend; crossfwise with respecttrofeachl other andwhose marginsembrace said, iianges andhave theendedges of their corrugations` abutting against the inner peripheraliVall of said; 4bindingmeiulei, rivets securing said plates to, saidflanges, and. rivets `connectingsaid, plates at intl-43D e-ILMQRE.

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